(handbasin is a kind of ...) a bowl-shaped vessel; usually used for holding food or liquids

"she mixed the dough in a large basin"

(... is part of handbasin) a room (as in a residence) containing a bathtub or shower and usually a washbasin and toilet

(handbasin belongs to a domain located in ...) a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland; `Great Britain' is often used loosely to refer to the United Kingdom